AI Systems, LLMs, Agents & Bots – designscalable.com

AI APIs — Designing, Scaling, and Operating AI Services

AI Systems, LLMs, Agents & Bots / February 23, 2026

AI is rapidly moving from experimental demos to real production systems. Behind almost every AI-powered product — chatbots, copilots, recommendation engines, search assistants — lies a critical layer: AI APIs. If Large Language Models (LLMs) are the “brain,” then AI APIs are the nervous system that allows applications to interact with that intelligence reliably, securely, […]

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Intro to LLM Systems

Understanding Large Language Models as Production Systems, Not Just Models Large Language Models (LLMs) are often introduced as “AI models that generate text.”But in real-world production environments, LLMs are not standalone models — they are complex distributed systems. What users interact with is not GPT, Claude, or any model directly.They interact with LLM systems —